The objective of this study was to compare the professional identity perceptions among undergraduate students enrolled in predominantly female and male courses. The research method is cross-sectional and the sample consisted of 502 undergraduate students in the fields of health and engineering. A questionnaire with the Scale of Professional Self and Hetero-Perception (EAHP) was used to collect the data and descriptive statistics, exploratory factor analysis, and structural equations modeling were used as analysis techniques. According to the students from the two areas, the dimensions that best describe their professions are dynamism; technicity; effort; and ethics, while in the health field, the dimension that received the lowest average score was recognition, indicating that the professionals working in this field resent the lack of respect, admiration, and prestige in society, despite perceiving themselves as honest, honored, productive, and hardworking. Also, the average hetero-perception scores were lower for the health students and the difference between self and hetero-perception was less significant among the engineering students. The results confirm that the professional identities include gender-related attributes, leading to the conclusion that health professions remain vulnerable to gender domination relations.